i need to fuse small pieces of glass for my dt a level project (jewellery). only problem is, my school has 2 kilns, one old uhlig that doesnt and one wenger metamel no.2, and neither of them have temperature controls-school is apparently to retarded to think to buy one, or a new kiln. Is there any way to control the temperature of the kiln without a controller, e.g. opening the door slightly, so the glass fuses properly?
Thanks

er.. yeah forgot to add 'work'. the uhlig doesnt work